A friend of mine has a 2 year old Akita... which has seizures just as you described. He was given a perscription which the dog was to take everyday for the rest of it's life, with huge side effects. He opted to go to a homeopath (sp?) vet, who gave him some natural medical type herbs, not sure what but the Akita has only had 1 seizure since and this has been over a 1 year period. I am just writing this to let you be aware of other options if it was indeed a seizure. I agree with taking him to the vet as soon as possible and then explore your options.